Crude-oil burner.



which the oil UNITED STATES PATENT OFFICE emma-OIL BURNER Specification of Letters Patent.

Patented May 29, 1917'.

Application led January 6, 1917. Serial N o. 140,911.

To all 'zo/Lam z'zf may concern Be. it known that I, JonN YoUNe, a citi- Zen of the Dominion of Canada, residingat New llf'estiliinstel', in the Province ot' British Columbia, Canada, have invented certain new and useful Improvements in Crude- Oil Burners, ci' which the. following is a specification. Y 4

This invention relatesl to a crude oil burner for a boiler t'urnace or the like7 and belongs to that class wherein the oil is sprayed from the burner by steam under pressure, the, oil in a finely divided state being delivered from the burner outlet with the steam.

In all burnersof this class with which I am acquainted the oil is delivered through small apertures in a. central pipe into a concentrically disposed pipe through which' the steam is delivered. This system is open to objection in that the aperturesI through is delivered are subject to ob struction'.

This objection is overcome in the inven tion, which is the subjectv of this application, and an exceedingly simple and effective burner is produced, by delivering the steam through-4 a central the concentric inter-space between it and an outer ipe, which interspace is restricted, enlarge( and again restricted at the burner. At the lirst annular enlargement and adjacent the second restriction a series of small apertures deliver the steam from the inner pipe to the enlarged annular space,` the apertures being angled to induce a forward i'noven'lent toward the burner outlet and a gyratory movement within the interspace. From the second restriction. the combined oil and steam under livered into a mixing chamber before delivery to the outlet.;`

The inventionfpgis particularly described in the following specification, reference being made to thedrawings by which it is accompanied7 in which:

Figure l is ageneral: view of the burner showing the connection of the oil and steam pipes thereto.

Fig. 2 is a longitudinal larged Scale ofY the burner.

Fig. 3,- a 'cross section n Fig. 2, and

Fig. 4, an enlarged section on lthe line 4 4 section to an en- .the line L- in 1n Flg. 2. a n

The burner comprises a member 2 which 4standard leave a chamber space l2 pipe and the oil throughy pressure is abruptly del' is axially bored and is threaded at one end to receive the oil )ipe 3 and at the other end is reduced to a. re atively smaller burner outlet 4, which outlet is threaded with a coarse screw thread. Intermediate of the ends the member is bored cylindrical to a dimension between that of the bore at 3 `and 4, the change of dimension being at both ends abrupt and conical at an anglev of approximately one hundredand ten degrees. Steam is delivered to the burner through a. pipe (i which passes axially through the oil pipe 3 for a distance of about eighteen inches from the T 7 to which the oil service pipe is connected, being supported in the T by a reducer 8. Threaded on the end of this steam pipe 6 to project within the burner 2 is ay member 10 which beyond the end of the pipe G is conieally reduced to a dimension approximating that of the steam pipe and toward the end is again abruptly enlarged, as at l1, to a dimension slightly less than the cylindrical boreof the burner 2. This end 1l is blind and square across and' is .a short distance from the burner outlet 4. so as to between the end of the inner member 1() and the conical reduction of the burner 2 at the outlet.

Thereduction oi. the diameter of the memis connected isconical to an angle approximating one hundred and ten degrees and into the conical slope of this reduction a series of small apertures 13 are drilled normal to the slope and at a slight angle to the radius to impart a swirling movement to the steam and oil rin the enlarged interspace, and at the other end of this inters iace, that is, adjacent the enlarged end 1l o the member 10 is anothei series ot' simili apertures 14 drilled at a similarly slight angle to the radius. Y

With a burner so constructed, the oil is delivered to the burnerthrough the pipe 3 and before reaching the burner is wel] heated by the steanr passing to the-burner through the entrai pipe (i. Thisl oil is checked in its lew as' it passes through the restricted` annular space between the inside of the pipe 3 and the outside of .the inner member `l() where it is secured on the end of the pipe (i, so that ther-ewig; no flooding of with oil, while the beat and vibration of the inner pipe will tend to? t'ree any tendency to obstruct at this restriction.

As the oil emerges from this restriction it ber 10 at the end to which the steam pipe 6 the burner e is met by the jets ot steam issuing throughtbe apertures lll and ll. 'l`he oil is,tl |ereb broheu up into` a liuely divided state bel'ore it meets the restrirtiou whieh the end ll olI the inner pipe malges with the eyliudrieal bore nlI the burner 2. 'l`his linely divided' oil and steam under pressure expands l'reely 'from the restrietiou at the end tl into the ehamber spaee l2 and in that expansion is l'urther finely divided and mixed together ready for issuauee through the burner out let ll. The serew thread ol' this burner outlet prevents the jet ol' gaseous l'nel `beiug projeettaltoo l'ar into the t'uruaee as it holds .baelt the. outer zone ol' the jett so that it is iu a better eouditiou to mix with the air t'or eombnstion whieh is admitted through the lurnaee l'ront adjaeent the iutrodmtion oli the burner pipe theretlu-ough.

'lhe steam servire pipe t' is trapped otI any water of eondensation by eonueeting' it to the braneh of a T to thev straight line eouueetion of whit-h a drain pipe E) is eonneeted.

llavitug now pt-.rtienlarly deseribed my iuyentiiou, l herebydeclare that what l elaim as new and desire to be proteeted. in by Let-- ters Patent. is:

1. A crude oil burner, eomprisiug in eombination, an outer pipe to whieh an oil service is eouneeted, a steam pipe.. passing axially through it, an outer lmruer member secured to the end ot the oil pipe` said member axiallyY` bored and abruptly redueed at its end to a burner aperture` an inner burner member serured on the elul of the inner pipe to projet-t within the outward member to a short' distance from its outlet., said inner member axially bored in alinement with the, steam pipe to a short distance from 4its end, the end diameters ot' the inner member being sueh as will leave restricted annular spaees between them and the bore of the onier member, aud intermediate ot' its ends reduced in diameter to lea're a larger annular spaee between the rest-rietions, said intermediate reduee'd portion having a series of small apertures delivering into the said larger annular spare.

2. A crude oil burner, eomprising in com-'i bination. an outer pipe to whieh an oil servire is connected, a steam pipe passing axially through it, an outer burner member secured to the end of the oil pipe, said member axiallyl bored and abruptly reduced at its end to a burner aperture, an inner burner member seeured on the end of the inner pipe to projeet within the outward member to a short distant-e from its out'- let, said inner member axially bored'in alinemen with thel steam pipe to a short distant-e from its end. the end diameters of the inner tuembfer being sueh as will leave restreted annular spite@ between them and the bore of the outer member. and yintermediate of its ends reduced in diameter t0 leave. a larger annular spaee between the restrietions. said intermediate redneed portion having a series olI small apertures delivering into the said larger annular spare. said apertures being angled forward aud angled to a radius to impart a forward gyratory movement to the tlnid within the enlarged annular spare.

Il. erude oil burner. eomprising in eon1- bimtien. an outer pipe to wltieh un oil servire is ronneeted. a steam pipe passing axially through it` an outer burner member threaded onto the oil pipe aml axially bored eylimlrieal to, a diameter whieh is eonieally redueed l'rom that oll the thread and at the opposite end is abruptly reduced to a eireular delivery outlet. an inner buruer member seeured ou the eml oll the inner pipe topropet within the outer member to :t .short distauee trom its outlet. said inner member eonieally redueed in diameter adjaeent the eonieal reduetiou ot the outer member uml again abruptly enlarged adjarent the elul toa diameter slightly les:` than the e \'lindriral bore ol tlu` outer member. said inner member provided with a series olE small apertures at the eonieal reduetion \vhi"h are normal to the .snrl'aee ol' the roue, and angled slightly t'rom tht` radial line` aml another series ol' small apertures adjaeentl the end enlargement whieh apertures are similarly angled to the radius.

l. erlule oil burner. eomprisiug in eombination. an outer lufrnei: member axially bored aml tlireaded'to tit an oil servire pipe, and therebeyond eonieally redueed to a eyliudrieal bore whit-h at the farther end is abruptly redueed to a eirrular delivery outletan inner burner member the outside diameter ot' whit-h at one eml is larger than the` e \'lindrieal bore ol' the outer member aud at the. other end has a diamter slightly less than the e \'limlrieal bore oli the outer member and intermediate of its ends is redueed below the diameter of ythe outer end the reduetiou at the larger vend being to||i eal to correspond with the eonieal rednetion ot' the bore-of the outer memla-r, said inner member being .axially bored to a short; distant-e from its end whit-h end terminates a short distauee t'rom the delivery aperture ot' the outer member. the inner member bei'ng provided at its eouieal rednetion with a` series ot' apertures normal to thas-urtare of the eone butl angled 'from the radius aud at the vother end of the. redueed port'ion has a seriesot apertures similarly angled to the radius, and means t'or eonneeting a .steam servire to deliver to the bore of the ilmer member.

A erude oil burner. comprising in eombination. an outer burner member axially bored aml threaded at one eml to tit an oil servit-e pipe and therebeyond eonieally reduced to a, cylindrical bore which at the farther end is abruptly reduced to :1 circular delivery eutletthreaded witlia Screw Athi-eed, lanr inner. burner memberflie outside diameter of which is at one end larger 5 thamthe cylindrical Abore -ber `arid at the other end has a diameter slightly 'less than the said cylindrical bore and intermediate'ofitsends is reduced below the diameter of the outerfend, the revu duction atthe larger 4end jbeing vconical to correspond `with the conical 'reduction lin the bore ef the outer member-,the outerend of the outer memof the inner member terminating a Short distance from the outlet vreduction of the outer member so as to leave va. chambered lintel-space, lthe inner member being axially bored to a short distancerfroin its` outer. end 'and having through it at the'intermediate ice to the bore of the innerv member. l

` vIn testimny whereofI aix 'my signature.

' JOHN YOUNG.

a series of vsmall apertures reduced portimnnnd means fox-delivering a steam serv` 20v 

